6An unidentified man waits to enter the family home of journalist Steven Sotloff, in Pinecrest, Florida, Sept. 2, 2014

7This still image grabbed from an undated video released by Islamic State militants on Aug. 19, 2014, purports to show journalist Steven Sotloff being held by the militant group.

8Arthur Sotloff, father of slain journalist Steven Sotloff, leaves the family home in Pinecrest, Florida, Sept. 2, 2014.

9White House press secretary Josh Earnest speaks about the video posted on the internet that purports to show the beheading of U.S. reporter Steven Sotloff by Islamic State militants, during his daily news briefing at the White House in Washington, Sept. 2, 2014.